Type-bar segment for type-writers



No. 753,397. ATBNTED MAR. 1, 1904. 0. W. HOWELL, JR. TYPE BAR SEGMENTFOR-TYPE WRITERS.

APPLIUATIOIT FILED OCT. 5, 1903.

no Mount.

INVENTOR UNITED STATES Patented March 1, 1904 PATENT OEETcE. v

CHARLES WV. HOWELL, JR, OF NEWARK, NEW JERSEY, ASSIGNOR TO UNDERWOODTYPEVVRITER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEWV JERSEY.

TYPE-BAR SEGMENT FOR TYPE-WRITERS.

SPECIFICATION forming part of Letters Patent No. 753,397, dated March 1,1904.

Application filed October 5, 1903. Serial No. 1'75 ,784. (No model.)

T0 60% whom, it may concern.-

Be it known that I, CHARLES W. HOWELL, Jr., a citizen of the UnitedStates, and a resident of Newark, Essex county, State of New Jersey,have invented certain new and useful Improvements in Type-Bar Segmentsfor Type-Writers, of which the following is a specification.

My invention relates to that member of a type-writer or like machine onwhich the typebars are pivotally supported, and has for its object toefiiciently protect the pivot portions of the type-bars from dust orother foreign matter.

The invention will now be described in detail with reference to theaccompanying drawings, and the novel features will then be pointed outin the appended claims.

Figure l is a sectional elevation of a portion of a type-writing machinesufficient to illustrate my invention. Fig. 1 is a bottom view of aportion of the segment with the type-bars removed. Fig. 1 is a rearelevation of a portion of the segment with the typebars removed, andFig. 2 is a sectional detail of another form of my invention.

A designates that portion of the frame to which the levers B, carryingthe keys B, are. pivoted, as at B A is the frame portion, on which arefulcrumed the elbow-levers O, arranged to transmit motion from thekey-levers B to the corresponding type-bars D. Only one set of theseparts is shown in Fig. 1, it being understood that a large number ofsuch sets are located side by side. The elbow-lever O is fulcrumed at O,has a pin-and-slot connection O with the key-lever B, and anotherpin-and-slot connection O with the type-bar D.

E is the stationary cushion, on which the type-bars rest in theirinactiveposition.

The type-bars are mounted on a pivot F, which is supported at the rearportion of the so-called segment G, which is secured to the frame of themachine. Each type-bar swings within a slot G of the segment, and Iprefer to make the type-bar with a deep notch D and with a point Dbetween said notch and the portion or hook D which engages the pivot F.The front side of the slots Gr is the one which is most exposed to theentrance of dust, particles of paper, and other foreign matter. Toprovide efficient protection against the entrance of dust, &c., fromthis side, I cause the slots G to terminate in the rear of the verticalplane (indicated by the line G at the forward face of the segment. Thedetail construction may vary. Thus in Fig. l the segment portion G whichforms the top wall of the slot G, is inclined downwardly from the rearto the front and projects beyond the forward end of the slot, and thusforms a protecting-overhang H. In Fig. 2 the segment portion G formingthe top wall of the slot G, is made horizontal, (although it might beinclined;) but the front surface G slopes downwardly from front to rear,so that here, too, the front end of the slot is in the rear of thevertical plane, (indicated by the line G leaving the extreme frontportion of the wall Gr to form a protecting-overhang H.

I desire it to be clearly understood that my invention is not restrictedto the two forms shown in the drawings; but various other constructionswithin the scope of my invention may be adopted to protect the frontends of the slots Gr. There is but little danger of dust, &c., enteringfrom the top, for the reason that the slots G are coveredthat is, theyterminate short of the upper surface G of the segment portion in whichthey are made. Even when this upper surface is horizontal, Fig. 2, thetop wall of the slots Gr may be inclined in thesame manner as shown inFig. l. The overhang H also extends over the entire path of the point D,which forms the foremost point of the type-bars pivot portion. Thus theoverhang H efliciently protects the entire portion I of each type-bar infront of the pivot F.,

I claim as my invention 1. In a type-writing machine, type-bars eachhaving a pivot portion and a type-carrying shank connected therewith, incombination with a type-bar segment provided witha series of slotsadapted to receive the type-bars, said slots extending from rear tofront and terminatin'g short of the Vertical plane of the segments frontsurface, being covered from above by a top wall having an overhangextending forwardly from the front ends of the slots and over the pathof the foremost point of the pivot portion of a type-bar.

2. A type-bar segment provided at its lower portion with a series ofslots adapted to receive the type-bars, a portion of the segment formingan inclined top wall for saidslots, which terminate short of the forwardend of said top wall, so that the lattenforms an overhang to protect theforward ends of the slots against the entrance of foreigngnatterr In atype-writing machine, type-bars each having a pivot portion and atype-carrying shank connected therewith, in combination with a type-barsegment provided with a series of slots adapted to receive thetype-bars, a portion of the segment forminga top wall for the said slotsto coverthem from above, said top wall being extended beyond the ends ofthe slots so as to form an overhang to protect the ends of the slotsagainst the entrance of for-

